Music-roll.



w. E. HASKELL.

MUSIC ROLL.

APPLICATION FILED AUG-2% 1916.

1,2.36A3U Patented Aug. 14, 1917.

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ENTTED ETATES PATENT @FFTQE.

WILLIAM E. HASKELL, OF BRATTLEBORO, VERMONT, ASSIGNOR TO ESTEY ORGANCOM- PANY, OF BRATTLEBORO, VERMONT, A CORPORATION OF VERMONT.

MUSIC-ROLL.

, Specification of Letters Patent.

Patented Aug. ML, 1917.

Application filed August 29, 1916. Serial No. 117,422.

To all whom it may concern:

Be it known that I, WILLIAM E. HASKELL, of Brattleboro, in the county ofWindham and State of Vermont, have invented certain new and usefulImprovements in Music- Rolls, of which the following is a specification.

Perforated paper music sheets such as are used in automatically playedmusical instru ments expand and contract due to variations in themoisture of the atmosphere; and in order that the sheet may wind andunwind uniformly upon the music roll, it has heretofore been proposed tomake one or both heads or end flanges of the music roll yielding so asto compensate for the shrinkage or expansion of the music sheet. Thepresent invention consists in improvements upon such music rolls withyielding end flanges, and is illustrated in the accompanying drawings,wherein- Figure 1, is a front view of the improved music roll. Fig. 2,is a View of one end of the roll. Fig. 3, is a longitudinal section ofone end of the roll in the plane indicated by the line 3-3 in Fig. 2.Fig. 4c, is a cross section in the plane indicated by the line 4-4 inFig. 3. Fig. 5, is a detail of a resilient spring retaining ringemployed.

The music roll comprises a core A, upon which the 'music sheet B, iswound; two heads or end flanges C, D; and pins E and F, fixed to thecore by means of which the roll may be rotatively mounted.

The head C, has an inwardly projecting elongated centrally bored boss G,which extends into a chamber H, in the core A, and which slides upon thepin E. Also the head C, has an outwardly extending sleeve I, with anelongated socket J, of greater diameter than the pin E. This socketextends inwardly into the boss G, so as to form an elongated chamber forthe reception of a coiled spring K, surrounding the pin E. The spring islong enough so that its tension is not seriously altered throughout themaximum width variation of the music sheet.

The spring K, presses inwardly upon the head 0, and outwardly against aretaining abutment carried by the pin E. This abutment consists of aresilient split retaining ring L, which is sprung into a holdingperipheral groove M, in the pin E. The sleeve I, and the socket J,terminate short of the outer and of the pin IE, and the groove M,

and the ring L, are beyond the outer end of the said sleeve and socketwhen occupying the normal innermost position shown in Fig. 3, so thatthe ring can be sprung into place in the groove after the head 0, andthespring K, have been put in place.

Fig. 3, shows the music sheet B, at its minimum possible width, at whichstage the spring K, pressing inwardly upon the head C, at the bottom ofthe socket J, seats the head against the adjacent end of the core A. Anyexpansion of the music sheet forces the head outwardly against thestress of the spring. The music sheet is therefore uniformly confined atits side edges, and hence always winds and unwinds squarely, thusavoiding the formation of ragged edges, and facilitating properregistration with the tracker.

The music sheet should have sulficient length between its end which isattached to the core, and the termination of its music controllingapertures, always to maintain enough winding on the core to resist themaximum tension of the spring.

Both heads may be yielding; but, preferably, the head D, is fixed to thecore so as to maintain a definite position on the roll for one edge ofthe sheet.

I claim 1. A music roll having, in combination, a core having a chamberat one end; a fixed pin extending outwardly through said chamber andhaving a peripheral holding groove near its outer end; a sliding headhaving an inwardly extending boss fitting over and sliding upon said pinand extending into said chamber, an outwardly extending sleeve, and anelongated central socket extending inwardly through said sleeve and intosaid boss and surrounding said pin with a space between; a coiled springwithin said socket and surounding said pin; and a split resili entretaining ring sprung into said holding groove and constituting an outerabutment for said spring.

2. A music roll having, in combination, a core having a chamber at oneend; a fixed pin extending outwardly through said chamber; a slidinghead having an inwardly extending boss fitting over and sliding uponsaid pin and extending into said chamber, an outwardly extending sleeve,and an elon gated central socket extending inwardly through sleeve andinto hose and surrounding said pin with a space between; a coiled springwithin said socket and surrounding said pin; and an abutment on said pinto resist the outward thrust of said spring.

3. A music roll having, in combination, a core having an internalchamber open at one of its ends; a fixed pin extending from said coreoutwardly through said chamber; a sliding head having an inwardlyextending boss fitting over and sliding upon said pin and extending intosaid chamber; an outwardly extending sleeve normally terminating shortof the outer end of said pin, and an elongated socket extending inwardlywithin said sleeve and surrounding said pin with a space between; acoiled spring within said socket and surrounding said pin and anabutment on said pin beyond the outer end of said sleeve when occupyingits normal position against which the outer end of said spring bears.

In witness whereof, I have hereunto signed my name.

WILLIAM E; HASKELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. G.

